Which phrase describes the chromosomes by the end of prophase of mitosis?
a. the chromosomes have stretched out.
b. the chromosomes have separated at the centromere.
c. the chromosomes are pulled to opposite sides of the cell.
d. the chromosomes have coiled and become more compact.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.